WD Ultrastar 18TB DC HC550 | Enterprise Hard Drive | SATA 6Gb/s, 512MB Cache, RPM@7200, Up to 269MB/s Transfer Speed | MODEL NO-0F38459/WUH721818ALE6L4

WD Ultrastar 18TB DC HC550 is designed for modern data centers where Total Cost of Ownership (TCO) is a critical factor in infrastructure decisions. Offering massive capacity in a standard 3.5-inch form factor, the WD Ultrastar 18TB DC HC550 helps reduce CapEx by minimizing the need for additional hardware and racks, while also cutting OpEx through improved energy efficiency and lower maintenance requirements.

This enterprise-grade drive utilizes Energy-Assisted Magnetic Recording (EAMR) technology to enhance areal density, along with Triple Stage Actuator (TSA) technology for precise head positioning and improved performance. Combined with HelioSeal® technology—now in its sixth generation—the HC550 operates with less turbulence, reduced power consumption, and higher reliability.

With a 7200 RPM spindle speed, 512MB cache, and transfer speeds up to 269MB/s, the HC550 is ideal for demanding workloads such as cloud storage, enterprise backup, and hyperscale environments. Its SATA interface, robust security features, and 5-year limited warranty ensure long-term dependability and peace of mind.

Certified for global standards and backed by Western Digital’s track record of over 65 million HelioSeal drives shipped, the Ultrastar 18TB DC HC550 delivers exceptional value, capacity, and efficiency for data-driven enterprises.